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Class 11 NEET Chemistry Chemical Thermodynamics
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© examsnet.com
Question : 26
Total: 94
The heat of combination of carbon to
CO
2
is
−
393.5
kJ
∕
mol
. The heat released upon formation of
35.2
g
of
CO
2
from carbon and oxygen gas is
[NEET 2015]
+
315
kJ
−
630
kJ
−
3.15
kJ
−
315
kJ
Validate
Solution:
👈: Video Solution
Given
C
(
s
)
+
O
2
(
g
)
→
C
O
(
g
)
,
∆
H
=
−
393.5
kJ
∕
mol
Then amount of heat released on formation of
44
g
CO
2
=
393.5
kJ
∴
Amount of heat released on formation of
35.2
g
CO
2
=
393.5
44
×
35.2
=
314.8
≈
315
kJ
© examsnet.com
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